Septic system plastic distribution box with integrally fastened seal

Abstract

A plastic fluid distribution box for installation in a subterranean system for waste water transport includes a first wall having an opening in the wall, and an elastomeric seal mounted in the opening and including a second wall. The second wall is permanently and sealingly attached to the first wall adjacent to and around the opening. The elastomeric seal includes a third planar wall having an annular separation ring defining a second opening dimensioned to provide a watertight fit on a pipe of predetermined dimension. Walls connecting the third planar wall to the second wall are angled with respect to the planar wall by an angle selected from the group of angles consisting of generally 90 degrees and generally 180 degrees.

I claim: 
     
       1. A fluid distribution box adapted for subterranean burial, comprising: a plastic container, being one piece circumferentially, and having a top, a bottom and comprising a first wall between said top and bottom, said first wall having an outer side and an inner side with respect to said plastic container,   a first opening through said first wall formed by said first wall surrounding said opening in one continuous piece,   a separately formed, plastic seal member comprising a cylindrical wall having a first end and a second end,   said cylindrical wall comprising a second opening through said seal member from said first end to said second end for receiving a pipe through said seal member   an annular flange on said cylindrical wall, extending generally radially outward from said cylindrical wall,   said flange having a first side facing toward said first end of said cylindrical wall and having a second side facing toward said second end of said cylindrical wall,   said cylindrical wall extending into said first opening,   the first side of said flange being fastened in a continuous annular bond and continuous water tight seal to one of said outer side and said inner side of said first wall around said opening by a fusion bond, and   the second side of said flange facing away from said first wall.   
     
     
       2. The distribution box of claim 1, further comprising: an annular bead on said flange, extending axially on said first side of said flange, spaced from said cylindrical wall, and fused to said first wall around said first opening.